EP3722165B1 - Procédé d'alignement électrohydraulique des corps porteurs ou de remorques - Google Patents

Procédé d'alignement électrohydraulique des corps porteurs ou de remorques Download PDF

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Publication number
EP3722165B1
EP3722165B1 EP20165395.3A EP20165395A EP3722165B1 EP 3722165 B1 EP3722165 B1 EP 3722165B1 EP 20165395 A EP20165395 A EP 20165395A EP 3722165 B1 EP3722165 B1 EP 3722165B1
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EP
European Patent Office
Prior art keywords
support body
pivot axis
support
alignment
lift
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EP20165395.3A
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German (de)
English (en)
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EP3722165A1 (fr
Inventor
Christian Evesque
Markus Wolf
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Ewo Fluid Power GmbH
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Ewo Fluid Power GmbH
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Publication of EP3722165A1 publication Critical patent/EP3722165A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
    • B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
    • B60S9/12—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure of telescopic type

Definitions

  • the present invention relates to a method for the electrohydraulic alignment of a supporting body, which is at a standstill, in a predetermined alignment, in particular in a horizontal alignment, according to the preamble of claim 1, carried out by means of lifting supports.
  • a support body can in particular be a vehicle, for example a motor vehicle or a vehicle trailer, or a vehicle body.
  • a support body can be formed by any body that is suitable for alignment by lifting supports, for example by a table in handling technology.
  • support bodies can be inclined relative to a horizontal orientation by adjusting the jacks in two different vertical planes about a pivot axis in each case, the jacks being hydraulic are connected to a hydraulic unit which is driven by an electric motor and by which they can be operated in the retraction direction or in the extension direction.
  • the electric motor of the hydraulic unit is electrically connected to a control unit comprising a computer unit, which in this way can control the hydraulic unit in a computer-controlled manner.
  • Data on the respective inclination of the supporting body or vehicle trailer about the two pivot axes relative to the horizontal orientation are recorded by at least one inclination sensor and transmitted electronically via a wired and / or wireless transmission link to the control unit, which then uses the transmitted data to transmit control signals generated, by means of which the jacks are controlled for leveling or for aligning the support body in the horizontal or in another desired orientation.
  • a method for performing a leveling process by means of hydraulic support cylinders is known in which the prevailing pressure is recorded in each cylinder and, when a pressure increase in a support cylinder is determined that exceeds a predetermined threshold value, a pressure signal is generated for the support cylinder, on the basis of which the further supply of the support cylinder in question is generated Hydraulic fluid is prevented by the control logic.
  • the object of the present invention is therefore to provide a method of the type mentioned at the outset which, when the lifting supports are in safe contact with the ground, enables a predetermined, in particular horizontal, alignment of support bodies in a particularly simple and inexpensive manner and does not require any pressure sensors for this.
  • a jack means that the support area of the jack that can be placed on the subsurface is raised upwards so that the support body carried by it approaches the subsurface or the support area of the jack moves away from the subsurface if the support body is otherwise supported.
  • extending a jack means that the support area of the jack that can be placed on the ground is lowered so that it approaches the ground or lifts the support body after it has been placed on the ground.
  • the method takes advantage of the fact that a change in the inclination about the first or the second pivot axis occurs when Retraction or extension of jacks can only take place if the retracting or extending jack is still in contact with the ground or has already touched down on the ground.
  • a significant advantage here is that during the extension or retraction movement of a lifting support, neither pressure sensors nor pressure switches are required to determine an end point and, nevertheless, sufficient ground contact of the lifting supports can be determined with certainty.
  • the inclination sensors required for this are also required in conventional automatic methods for horizontal alignment and are therefore available anyway. Since no pressures have to be recorded for this, the method according to the invention can also be used reliably in the case of supporting bodies and vehicle trailers with only a low weight.
  • Another advantage is that no multiple complex multi-way valves are required to control the jacks, but only much simpler and more weight-saving safety valves or shut-off valves in order to be able to control the jacks in the manner required to achieve the predetermined alignment.
  • the method according to the invention allows a particularly simple and yet stable, preferably horizontal alignment of support bodies, which can be achieved particularly inexpensively without multi-way valves and without pressure sensors or pressure switches.
  • the predetermined alignment of the support body is a horizontal alignment.
  • a horizontal alignment of a support body or vehicle trailer in the context of this application is understood to mean the positioning of a base surface of the support body or of the vehicle trailer in a horizontal plane running perpendicular to the perpendicular direction. But even if a support body is to be aligned or leveled horizontally in most cases, the method according to the invention is not limited to this, but it also enables electrohydraulic alignment in a different orientation required or desired for a specific application, around any axis is inclined with respect to a horizontal orientation and then represents the predetermined orientation for this application.
  • the first intermediate alignment is defined in such a way that in the first intermediate alignment the first side of the support body lies above the side of the support body which is opposite with respect to the first pivot axis.
  • the second lifting support lies on the side of the support body which, before the second lifting support is extended, lies below the side of the support body opposite this side with respect to the second pivot axis.
  • the extension paths of the jacks can be kept as small as possible.
  • the second intermediate alignment it is particularly advantageous if it is defined in such a way that in the second intermediate alignment the side of the support body on which the second lifting support is arranged lies above the side of the support body which is opposite with respect to the second pivot axis.
  • the intermediate angle is set such that it has a value of 0.04 ° to 2 °, preferably from 0.06 ° to 1 ° and particularly preferably from 0.08 ° to 0.5 °.
  • the intermediate angle can be 0.1 °. If the intermediate angle for controlling the method according to the invention is programmed to a value of 0.1 °, this can mean a value of 0.2 ° in reality when the method is carried out.
  • the intermediate angle can be set to be the same or different for both pivot axes.
  • the two pivot axes run in a common plane, which preferably coincides with the base surface of the support body or vehicle trailer to be aligned or runs parallel to it.
  • a particularly simple alignment can be achieved in that the two pivot axes run perpendicular to one another in the common plane.
  • the supporting body is a vehicle trailer that is at a standstill, in particular a truck semitrailer or a caravan, which is coupled to a towing vehicle.
  • the first pivot axis runs parallel to at least one wheel axis of the vehicle trailer.
  • At least one front lifting support which is arranged in a front area of the trailer with respect to the first pivot axis, is extended at least until the front area of the trailer is raised to such an extent that the trailer is pushed forward the towing vehicle can be decoupled from this
  • first side of the support body is formed by the front region of the trailer and the at least one first lifting support is retracted to achieve the first intermediate alignment of the support body.
  • the support body is a frame or a table of a handling device, for example within a production and / or assembly system.
  • the at least one first lifting support which is arranged on a first side of the support body with respect to the first pivot axis, is formed by at least two first lifting supports, which are arranged on opposite sides of the support body with respect to the second pivot axis and which are used in Retracting or extending the at least one first jack can be moved at the same time.
  • the at least two first jacks are advantageously hydraulically connected to one another in such a way that a fluid exchange between the two first jacks is possible during the extension of the second jack and during the extension of the third jack.
  • the at least two first jacks can be connected to a hydraulic unit common to the at least two first jacks via a line branching, for example a T-piece, and a common hydraulic line.
  • a line branching for example a T-piece
  • a common hydraulic line Preferably, all of the jacks can be connected to a common hydraulic unit.
  • a common shut-off valve can be interposed between the line junction and the hydraulic unit common to at least the two first lifting supports.
  • shut-off valve can also be inserted between the line junction and each of the two first lifting supports.
  • shut-off valve is interposed between the hydraulic cylinders of the other lifting supports and the hydraulic unit. After the predetermined alignment has been reached, the intermediate valves also serve as a safety valve to maintain the alignment.
  • a shut-off valve is significantly more cost-effective and weight-saving than a multi-way valve, which for controlling the jacks in the method according to the invention should either be limited to only one piece for all jacks or should even be avoided completely.
  • a common reversible hydraulic unit be used. It is advantageous here that no additional directional control valves are required to reverse the direction of flow of the hydraulic fluid, since this can be achieved by reversing the direction of rotation of the electric motor. Alternatively, the direction of flow can also be reversed using a normal hydraulic unit in combination with a directional valve, which also allows larger volume flows so that the method can be carried out more quickly. A single directional control valve is sufficient.
  • each lifting support has its own reversible hydraulic unit for its actuation.
  • shut-off valves are integrated in the base of the respective hydraulic cylinder.
  • a flow control valve preferably in combination with check valves, is inserted between the hydraulic unit and each lifting support. In this way it is also possible to raise or lower the support body which has previously been brought into the predetermined orientation without changing its orientation in the process.
  • the method according to the invention enables, in a simple manner, a computer-controlled or automatic leveling or alignment of supporting bodies or vehicle trailers in a predetermined, in particular horizontal alignment, which ensures safe ground contact of the jacks.
  • the support body 11 is formed by a chassis 1 of a caravan trailer.
  • the chassis 1 has a front support V behind the coupling device 2 and a rear support HL on the left side L and a rear support HR on the right side R behind the wheels 3.
  • the jacks HL and HR are mounted below the trailer floor and can, for example, be of the type described in the earlier patent application DE 10 2017 124 198 A1 of the applicant is described, to which reference is made in this respect.
  • Each lifting support comprises a double-acting hydraulic cylinder, by means of which it can be extended downwards against the ground or retracted upwards against the trailer chassis 1.
  • the three hydraulic cylinders 41, 42 and 43 of the three jacks V, HL and HR are connected via hydraulic lines 5a and 5b to a reversible hydraulic unit 6, which is formed by a hydraulic pump 8 driven by an electric motor 7.
  • a hydraulic pump 8 driven by an electric motor 7.
  • the two Pressure connections of the hydraulic cylinders 41, 42 and 43 are only connected to the hydraulic pump 8 via a simple ring line 5a, 5b, with both line branches 5a and 5b to the hydraulic cylinders in three lines 51a, 52a and 53a or 51b, 52b and 53b split.
  • a shut-off valve 91, 92 or 93 is interposed in a line branch 51b, 52b and 53b.
  • each hydraulic cylinder 41, 42 or 43 and thus also the associated lifting support V, HL or HR can be actuated in a targeted manner by individually activating the shut-off valves 91, 92 and 93 by a control unit (not shown here).
  • the shut-off valves 91, 92 and 93 can also serve as safety valves for blocking the hydraulic cylinders or the jacks when the hydraulic unit is switched off.
  • the three jacks V, HL and HR serve to bring the base area of the trailer formed by the chassis 1 and thus also the entire caravan trailer into a horizontal orientation.
  • the trailer can be tilted about two different pivot axes 10 and 20 by retracting or extending one or more jacks.
  • the pivot axes 10 and 20 are aligned perpendicular to one another, the first pivot axis 10 running parallel to the wheel axis 30 supporting the two wheels 3, whereas the second pivot axis 20 runs perpendicular to the wheel axis 30 and through the coupling device 2.
  • the inclination of the trailer chassis 1 with respect to a horizontal or horizontal plane about these two pivot axes 10 and 20 is detected by two inclination sensors 15 and 25.
  • the first inclination sensor 15 detects the forward or rearward inclination of the trailer chassis 1 with respect to the first pivot axis 10, while the second inclination sensor 25 detects the lateral inclination of the trailer chassis 1 with respect to the second pivot axis 20.
  • the data on the inclination of the trailer determined in this way are electronically transmitted to the control unit, which uses this inclination data to generate control signals by means of which the jacks V, HL and HR are controlled as follows for the horizontal alignment of the trailer chassis 1: Starting from the state coupled to a towing vehicle, when the trailer is at a standstill, in a first process step the front lifting support V is first extended downward by the control unit until the coupling device 2 at the front end of the trailer is raised to such an extent that the trailer is pushed forward by the towing vehicle can be decoupled from this.
  • the front support V is in safe contact with the ground. It is located in the front area of the trailer, which here forms the first side of the support body 11 with respect to the first pivot axis 10 and, after the first method step, is higher with respect to the first pivot axis 10 than the rear area of the trailer.
  • a second method step the front lifting support V is raised or retracted upwards again, as a result of which the inclination of the trailer about the wheel axis 30 and thus also about the first pivot axis 10 changes.
  • This change in inclination of the support body 11 formed by the trailer chassis 1 is detected by the first inclination sensor 15 and transmitted to the control unit.
  • the front support V is retracted upward by the control unit until the front area of the trailer is only slightly higher than the rear area of the trailer in a first intermediate alignment with respect to the first pivot axis 10.
  • This first intermediate alignment deviates with respect to the first pivot axis 10 from a horizontal alignment of the support body 11 by an intermediate angle ⁇ which is between 0.5 ° and 1 °, for example.
  • one of the two rear jacks HL or HR is extended downwards. If the support body 11 formed by the trailer chassis 1 is not in a horizontal orientation with respect to the second pivot axis 20, the control unit extends that of the two rear jacks HL or HR that are located on the second pivot axis 20 lower side of the trailer. The resulting change in inclination of the trailer or support body 11 about the second pivot axis 20 is detected by the second inclination sensor 25 and transmitted to the control unit. The affected rear jack HL or HR is extended downward by the control unit in this third process step until the corresponding left or right side of the trailer is slightly higher than the opposite right or left side of the trailer in a second intermediate alignment with respect to the second pivot axis 20 .
  • the second intermediate alignment also deviates from a horizontal alignment of the support body 11 by an intermediate angle ⁇ , which is preferably between 0.5 ° and 1 °.
  • a fourth method step the other of the two rear jacks HR or HL, which has not yet been moved, is extended downwards.
  • this rear support HR or HL is extended by the control unit until the second inclination sensor 25 detects a horizontal alignment of the support body 11 with respect to the second pivot axis 20. In this way it is ensured that the last extended jack HR or HL has safely touched the ground.
  • the first inclination sensor 15 detects the alignment of the support body 11 with respect to the first pivot axis 10 resulting after the execution of the third and fourth method step and the desired horizontal alignment of the support body 11 or trailer around the two pivot axes 10 and 20 aligned perpendicular to one another has already been achieved. Otherwise, a final fifth process step follows.
  • the control unit moves the front support V in or out in a fifth method step until the first inclination sensor 15 also detects a horizontal alignment of the support body 11 with respect to the first pivot axis 10.
  • the trailer chassis 1 and thus also the entire caravan are then in the desired horizontal orientation.
  • safe ground contact of all three jacks V, HL and HR is guaranteed without the need to record hydraulic operating pressures in hydraulic cylinders 41, 42 or 43 or pressure values at the foot areas of the jacks that touch the ground.
  • no complex multi-way valves are required for the hydraulic circuit structure.
  • Chassis 1 of a truck trailer shown two front jacks are provided in the front area, namely a front left jack VL on the left side L and a front right jack VR on the right side R. Together with the rear left jack HL and the rear right The truck trailer chassis 1 thus has a total of four lifting supports.
  • the four hydraulic cylinders 41, 42, 43, and 44 of these four jacks VR, HL, HR and VL are according to the in Figure 4
  • the hydraulic circuit diagram shown is connected via hydraulic lines 5a and 5b in the form of a ring line to the hydraulic unit 6, which in this exemplary embodiment is also designed to be reversible with a hydraulic pump 8 driven by an electric motor 7.
  • the second line branch 5b divides as in the case of the one in FIG Figure 3 hydraulic circuit diagram for the in Figure 1 shown trailer chassis 1 to the four hydraulic cylinders only in three lines 51b, 52b and 53b, in each of which a shut-off valve 91, 92 and 93 is interposed. It is essential in this embodiment that the line 51b behind the shut-off valve 91 is again divided into two lines 511b and 514b, which are each connected to a hydraulic cylinder 41 and 44 of the two front supports VR and VL.
  • each hydraulic cylinder 42 or 43 of the two rear jacks HL or HR can be specifically activated individually by activating the shut-off valves 92 or 93 individually by a control unit, also not shown here.
  • the individual activation of the shut-off valve 91 by the control unit actuates both hydraulic cylinders 41 and 44 of the two front lifting supports VR and VL together at the same time.
  • a three-point support is simulated for the four jacks VL, VR, HL and HR so that they can be connected to the previous one Figures 1 and 3 described electronic leveling control of the three-point support or the control software used is compatible.
  • the method according to the invention for achieving a horizontal alignment of the chassis 1 and thus also of the entire truck trailer can therefore be carried out in exactly the same way as was described above for the in Figure 1 depicted caravan has been described.
  • Another advantage is that the hydraulic fluid can flow freely back and forth between the two hydraulic cylinders 41 and 44, which means that the two front jacks VR and VL automatically move to the one specified by the two rear jacks HL and HR with respect to the second pivot axis 20 Adjust the alignment of the support body 11.
  • the embodiment variant shown here is four hydraulic cylinders 41, 42, 43 and 44 of four lifting supports, not shown here, of a support body, also not shown here, via hydraulic lines 5a and 5b to a hydraulic unit 6 with a hydraulic pump 8 driven by an electric motor 7.
  • the two branches of the line 5a and 5b are divided into four lines towards the pressure connections of the hydraulic cylinders.
  • a shut-off valve 91, 92, 93 or 94 is interposed in a line branch 5b for each hydraulic cylinder 41, 42, 43 and 44.
  • the shut-off valves 91, 92, 93 and 94 are integrated here in the base of the respective hydraulic cylinder 41, 42, 43 and 44.
  • each hydraulic cylinder 41, 42, 43 or 44 and thus also the corresponding jack VR, HL, HR or VL can be actuated in a targeted manner.
  • the shut-off valves 91, 92, 93 and 94 can also serve as safety valves for blocking the hydraulic cylinders or the jacks when the hydraulic unit 6 is switched off.
  • an additional shut-off valve 60 is interposed between the two hydraulic cylinders 43 and 44, which belong to the two front lifting supports VL and VR.
  • this shut-off valve 60 When this shut-off valve 60 is open, the hydraulic fluid can flow freely back and forth between these two hydraulic cylinders 43 and 44, whereby the two front jacks VL and VR are automatically moved with respect to the second pivot axis 20 according to the values given by the two rear jacks HL and HR Adjust the alignment of the support body. If, on the other hand, the shut-off valve 60 is closed, the two front jacks VL and VR are secured against unwanted adjustment as a result of mutual exchange of hydraulic fluid.
  • a leveling mode or a driving mode can be generated alternately.
  • the leveling mode takes place with the shut-off valve 60 open in the direction above Figures 1 and 3 described type.
  • the driving mode for retracting or extending the jacks takes place with the shut-off valve 60 closed in the preceding to Figure 5 described type.
  • a movement sequence can include a first leveling in leveling mode, followed by an inward or outward movement in drive mode.
  • a second leveling in leveling mode can follow after the driving mode in order to compensate for any deviations detected by the inclination sensors 15 and / or 25 in the orientation of the support body 11 from the previous leveling after the driving mode.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (15)

  1. Procédé d'alignement électrohydraulique d'un corps porteur (11) se trouvant à l'arrêt, en particulier d'un véhicule ou d'une carrosserie de véhicule, au moyen de supports de levage (V, VL, VR, HL, HR) dans un alignement prédéterminé,
    sachant qu'en réglant les supports de levage (V, VL, VR, HL, HR), le corps porteur (11) peut être incliné autour de deux axes de pivotement (10, 20) dans deux plans différents l'un de l'autre par rapport à un alignement horizontale,
    sachant que les supports de levage (V, VL, VR, HL, HR) peuvent être actionnés par un groupe hydraulique (6) pour être sortis et/ou rentrés, sachant que les supports de levage (V, VL, VR, HL, HR) et/ou le groupe hydraulique (6) sont commandés de manière informatisée par une unité de commande comprenant un ordinateur,
    et sachant que des données pour l'inclinaison respective du corps porteur (11) autour de deux axes de pivotement (10, 20) par rapport à l'alignement horizontal, sont saisies par respectivement au moins un capteur d'inclinaison (15, 25) et transmises à l'unité de commande,
    qui produit à l'aide des données transmises des signaux de commande à l'aide desquels les supports de levage (V, VL, VR, HL, HR) sont commandés pour aligner le corps porteur (11),
    caractérisé par
    les étapes de procédé suivantes :
    - au moins un premier support de levage (V, VL, VR), qui est disposé par rapport au premier axe de pivotement (10) sur un premier côté du corps porteur (11), est au moins rentré ou sorti jusqu'à ce que le premier capteur d'inclinaison (15) saisisse tant une modification de l'inclinaison du corps porteur (11) autour du premier axe de pivotement (10) qu'une première alignement intermédiaire du corps porteur (11), qui, par rapport au premier axe de pivotement (10), s'écarte de l'alignement prédéterminé du corps porteur (11) d'un angle intermédiaire (α) prédéfini,
    - un deuxième support de levage (HL, HR), qui fait face au moins à un premier support de levage (V, VL, VR) par rapport au premier axe de pivotement (10), est au moins sorti jusqu'à ce que le deuxième capteur d'inclinaison (25) saisisse tant une modification de l'inclinaison du corps porteur (11) autour du deuxième axe de pivotement (20) qu'une deuxième alignement intermédiaire du corps porteur (11), qui, par rapport au deuxième axe de pivotement (20), s'écarte de l'alignement prédéterminé du corps porteur (11) d'un angle intermédiaire (β) prédéfini,
    - un troisième support de levage (HR, HL), qui fait face au deuxième support de levage (HL, HR) par rapport au deuxième axe de pivotement (20), qui est sorti jusqu'à ce que le deuxième capteur d'inclinaison (25) saisisse l'alignement prédéterminé du corps porteur (11) par rapport au deuxième axe de pivotement (20),
    - au cas où le premier capteur d'inclinaison (15) saisit ensuite un alignement du corps porteur (11), qui s'écarte de l'alignement prédéterminé du corps porteur (11) par rapport au premier axe de pivotement (10), au moins un premier support de levage (V, VL, VR) sera rentré ou sorti jusqu'à ce que le premier capteur d'inclinaison (15) saisisse l'alignement prédéterminé du corps porteur (11) par rapport au premier axe de pivotement (10).
  2. Procédé selon la revendication 1, caractérisé en ce que l'alignement prédéterminé est un alignement horizontal.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que dans le premier alignement intermédiaire, le premier côté du corps porteur (11) se situe au- dessus du côté du corps porteur (11) opposé par rapport au premier axe de pivotement (10).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième support de levage (HL, HR) se situe sur le côté du corps porteur (11), qui se trouve avant la sortie du deuxième support de levage (HL, HR) en dessous du côté du corps porteur (11) opposé à ce côté par rapport au deuxième axe de pivotement (20).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans le deuxième alignement intermédiaire, le côté du corps porteur (11) sur lequel est disposé le deuxième support de levage (HL, HR), se situe au-dessus du côté du corps porteur (11) opposé par rapport au deuxième axe de pivotement (20).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'angle intermédiaire (a, β) se situe entre 0,04° et 2°, de préférence entre 0,06° et 1° et en particulier entre 0,08° et 0,5°.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le corps porteur (11) est une remorque de véhicule se trouvant à l'arrêt et accouplé à un véhicule tracteur, en particulier une semi-remorque ou une caravane.
  8. Procédé selon la revendication 7, caractérisé en ce que dans une première étape de procédé, au moins un support de levage (V, VL, VR) avant, qui est disposé dans une zone avant de la remorque par rapport au premier axe de pivotement (10), est au moins sorti jusqu'à ce que la zone avant de la remorque soit relevée jusqu'au point où la remorque peut être découplée par avance du véhicule tracteur.
  9. Procédé selon la revendication 8, caractérisé en ce que le premier côté du corps porteur (11) est formé par la zone avant de la remorque et en ce qu'au moins un premier support de levage (V, VL, VR) est rentré pour obtenir le premier alignement intermédiaire du corps porteur (11).
  10. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le corps porteur (11) est un châssis ou une table d'un dispositif de manutention.
  11. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que au moins un premier support de levage, qui est disposé sur un premier côté du corps porteur (11) par rapport au premier axe de pivotement (10), est formé par au moins deux premiers supports de levage (VL, VR), qui sont disposés sur les côtés du corps porteur (11) opposés l'un à l'autre par rapport au deuxième axe de pivotement (20).
  12. Procédé selon la revendication 11, caractérisé en ce qu'au moins les deux premiers supports de levage (VL, VR) sont raccordés à un groupe hydraulique (6) par un branchement de conduite et une conduite hydraulique (51b) commune.
  13. Procédé selon la revendication 12, caractérisé en ce qu'entre le branchement de conduite et le groupe hydraulique (6) commun est intercalée une soupape d'arrêt (91) commune ou en ce qu'entre le branchement de conduite et chacun des deux premiers supports de levage (VL, VR) est intercalée une soupape d'arrêt (91, 92) propre.
  14. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'entre le groupe hydraulique (6) et chaque support de levage (V, VL, VR, HL, HR) est respectivement intégrée un régulateur de débit (71, 72, 73, 74) de préférence respectivement en combinaison avec un clapet anti-retour.
  15. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que tous les supports de levage (V, VL, VR, HL, HR) sont tous rentrés ou sortis ensemble une fois le procédé terminé et en ce qu'ensuite l'inclinaison du corps porteur (11) autour des deux axes de pivotement (10, 20) est saisie avec les capteurs d'inclinaison (15, 25) par rapport à l'alignement prédéterminé et en ce que le procédé est à nouveau exécuté au moins en partie, au cas où au moins un capteur d'inclinaison (15, 25) saisit un alignement du corps porteur (11) s'écartant de l'alignement prédéterminé du corps porteur (11).
EP20165395.3A 2019-03-28 2020-03-24 Procédé d'alignement électrohydraulique des corps porteurs ou de remorques Active EP3722165B1 (fr)

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DE4033761C1 (fr) 1990-10-24 1992-04-02 Hydac Technology Gmbh, 6603 Sulzbach, De
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US20080021611A1 (en) 2006-07-21 2008-01-24 Hiebert Grant W Method and apparatus for controlling ride height and leveling of a vehicle having air suspension
NL1033643C2 (nl) * 2007-04-04 2008-10-07 Actuant Corp Hydraulisch systeem voor het waterpas stellen van een voertuig.
DE102007030107B4 (de) 2007-06-28 2013-03-21 Ewo Fluid Power Gmbh Verfahren und System zum elektrohydraulischen Ausrichten von Tragkörpern
WO2013052540A2 (fr) 2011-10-04 2013-04-11 Parker-Hannifin Corporation Procédé et système permettant de commander des actionneurs électriques
DE202016107009U1 (de) 2016-12-15 2017-08-07 Alois Kober Gmbh Hubstütze, dezentrale Hubstützenanordnung und Fahrgestell
US10427653B2 (en) 2016-12-22 2019-10-01 General Electric Corporation System and method for leveling a trailer
DE102017124198B4 (de) 2017-10-17 2020-01-02 Ewo Fluid Power Gmbh Stützvorrichtung für ein Fahrzeug
DE102018127547B4 (de) 2018-11-05 2021-04-29 Ewo Fluid Power Gmbh Verfahren zum elektrohydraulischen Ausrichten von Tragkörpern oder Anhängern

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